Tag Archives: homologous

03.23.17
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What did a T-Rex Taste Like?

trexWhat did a T-Rex Taste Like?

Believe it or not, we actually have was of finding this answer despite the fact the Tyrannosaurus Rex has been extinct for over 65 million years. We can determine a T-Rex features, including taste, using similar features (which we now know are called homologous structures). shared with animals the T-Rex is closely related to.

Recall that yesterday we learned that the more features you have in common, the higher the probability that you share a common ancestor/DNA (the exception would be convergent evolution where two species become increasingly similar despite the fact the originated from different ancestors). So what we can do is plot relatedness, based on characteristics, on a graphic called a cladogram, like the one shown here.

 
So Today, that’s exactly what we’ll be doing, using the link at the top of this post, you’ll follow the steps to learn how cladograms are created, organized, and what the different branches of it mean. By the time you are through, you will know what it tastes like to bite into a big fat dino-burger!

03.16.16
by

What did a T-Rex Taste Like?

trexLink: What did a T-Rex Taste Like?

Believe it or not, we actually have was of finding this answer despite the fact the Tyrannosaurus Rex has been extinct for over 65 million years. We can determine a T-Rex features, including taste, using similar features (which we now know are called homologous structures). shared with animals the T-Rex is closely related to.

Recall that yesterday we learned that the more features you have in common, the higher the probability that you share a common ancestor/DNA (the exception would be convergent evolution where two species become increasingly similar despite the fact the originated from different ancestors). So what we can do is plot relatedness, based on characteristics, on a graphic called a cladogram, like the one shown here.

So Today, that’s exactly what we’ll be doing, using the link at the top of this post, you’ll follow the steps to learn how cladograms are created, organized, and what the different branches of it mean. By the time you are through, you will know what it tastes like to bite into a big fat dino-burger!

03.20.14
by

What did a T-Rex Taste Like?

trexWhat did a T-Rex Taste Like?

Believe it or not, we actually have was of finding this answer despite the fact the Tyrannosaurus Rex has been extinct for over 65 million years. We can determine a T-Rex features, including taste, using similar features (which we now know are called homologous structures). shared with animals the T-Rex is closely related to.

Recall that yesterday we learned that the more features you have in common, the higher the probability that you share a common ancestor/DNA (the exception would be convergent evolution where two species become increasingly similar despite the fact the originated from different ancestors). So what we can do is plot relatedness, based on characteristics, on a graphic called a cladogram, like the one shown here.

So Today, that’s exactly what we’ll be doing, using the link at the top of this post, you’ll follow the steps to learn how cladograms are created, organized, and what the different branches of it mean. By the time you are through, you will know what it tastes like to bite into a big fat dino-burger!

03.19.14
by

Evidence of Evolution

Evidence of Evolution PDF

The images below show different types of evidence that prove Natural Selection is the driving force behind evolution. Use these images, information rom your iBook, and the web to create answers to my questions and learn more about the evidence of Natural Selection. For an added challenge, see if you can match the name of the evidence to it’s illustration (Mouse over the images to see the answer):

Analogous Structure, Homologous Structure, Vestigial Structure, Embryology, Amino Acid  (DNA) Sequence, Divergent Evolution, Convergent Evolution, Coevolution, Gradualism, Punctuated Equilibrium, Artificial Selection, Sexual Selection, Founder Effect, Directional Selection, Disruptive Selection, Stabilizing Selection

22_17HomologousForelimbs-L

Why do all of these DIFFERENT animals have the SAME bones?

aasequence_primates

Who do we SHARE the most DNA with? What does this mean about our Evolution?

analogous

Why do these DIFFERENT types of animals have the SAME feature? Does this mean that they are closely related? or does it mean that the trait they share is an advantage in their environment?

artificial

If Humans choose the traits they want plants or animals to have is it still natural selection?

convergent-evolution-marine-all-about-reptiles-com

Why do these DIFFERENT types of animals look so SIMILAR? Does this mean they are closely related? What do Analogous structures have to do with this type of evolution?

divergent_generic

So there was a large population with many variations… but they separated from one another over time…

divergent

Are these 2 new species of butterflies or still the same? What will happen over millions of years, will they look more similar or more different?

founder

How come only one individual had a red star in the original population, but almost half have one in the new/resulting population?

gene_conservation_med

Why do humans share more DNA with Mice than chickens? What does this tell us about our evolution?

whale-vestigial-structure

Whales have legs??? What does this information tell you about Whale ancestors? where did they live? What has happened to the legs over millions of years and why did this happen? Can you think of any human examples of this?

types of selection

Directional means the POPULATION mean will move toward one extreme.
Stabilizing means the POPULATION mean will move more toward the average.
Disruptive means the POPULATION will have two extremes that have large groups and less in the average. What will happen to this population over time?

vertebrate-embryos

Why do human embryos look so similar to fish embryos??? Does this mean we’re related to fish?

peacock_display

does this display help the peacock survive in its environment? or is it just for the ladies?

puncgrad

Compare the two types of evolution… Which one says that catastrophic events cause major changes in the population? How would you describe the other?

hummingbird

Do you think this plant always had flowers perfectly suited to a hummingbird’s beak?